文献类型：期刊文献

英文题名：Drop attachment behavior of oil droplet-gas bubble interactions during flotation

作者：Yan, Shenglin[1];Yang, Xiaoyong[1];Bai, Zhishan[1];Xu, Xiao[1];Wang, Hualin[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2020

卷号：223

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20202008659121);WOS:【SCI-EXPANDED(收录号:WOS:000566906100003)】；

基金：This research was supported by the National Natural Science Foundation of China (51578239) and the Scientific Research Projects of Shanghai, China (17DZ1202802), for which the authors express their appreciation.

语种：英文

外文关键词：Flotation; Oil droplet-gas bubble interaction; Attachment process; Film drainage

摘要：Flotation is an efficient pretreatment technology for oily water. In this paper, the attachment process between gas bubbles and oil droplets was investigated both experimentally and theoretically. The attachment process of the oil droplet onto the gas bubble was described in detail. The results show that the spreading of an oil film on the bubble surface precedes the spreading of the entire oil droplet during the spread phase. In the film drainage phase, the induction time increases with decreasing oil spreading coefficient and increasing bubble size and oil viscosity, among which the effect of the oil droplet viscosity is most significant. Moreover, during the spread phase, the oil droplet spreads rapidly on the gas bubble, and the spreading time also increases with decreasing oil spreading coefficient and increasing bubble/droplet size and oil viscosity. (C) 2020 Elsevier Ltd. All rights reserved.